Parallel ruler



Patenter l4,

VICTOR STROKE, OI ALAMEDA, Oi-ULIFORNIA.

PARALLEL RULER.

Application filed February 12, 1821.

To all whom it may concern Be it known that l, VICTOR A. Srnoar, a citizen of the United States, residing in ilameda, county of Alameda, State of Cali fornia, have invented certain new and useful Improvements in Parallel Rulers, whereof the following is a specification.

This invention relates to parallel rulers for the use of typists and its object is to produce an instrument to be placed upon the manuscript to be copied and moved from line to line thereon, to indicate the exact place to be ritten.

The particular device which I have select ed for herein illustrating the invention coin prises the following features A comparatively flat plate cylindrically mine-ave on its under side, having three openings therethrough, a cutting edge and a ruling guiding edge, a roller device mounted in the central opening so as to rest on the paper which may be under the instrument,

The edges are graduated to correspond with the graduationg on the typewriter, otherwise the spacing of the letters.

Other features of. the invention will appear hereinafter, in the description of the accompanying one sheet of drawing, in which I have illustrated the instrument above referred to, and in which,

Figure l is a plan view, showing the complete instrument, in use, and showing also a sheet of paper, under the instrument, and lines, indicating lines of typewriting thereon.

Figure 2 is a crosssection, taken at 2, 2, Figure 1, and showing the plate, and the central roller therein; the plate having one up-rolled edge, and one sharp edge.

Figure 3 is a cross-section, taken at 3, 3, Figure 1, showing how the up-rolled edge of the plate may be used as a straight-edge.

Figure 4: is across -section taken at 4, 4:, Figure 1, showing the slotted standards in which the roller has its bearing and showing also how the sharp edge of the plate maybe used as tearing edge.

In these figures ;-1 represents a sheet of paper, on which there may be lines of typewriting, as indicated at 2.

3 is the plate member of the instrument, having the peep holes & and 5, near its ends, through which the writing underneath may be seen, and having between the peep holes 4 and 5, an pening 6.

At the ends of opening 6, are standards 7,

Serial No. 444.355.

upon the plate member, said standards being slotted, as at 8. The roller member 9, of the instrument, projects through the opening 6, so as to rest upon the paper 1, and bear thereagainst by its own weight, and is provided with trnnnions 10, which enter the slots 8. and maintain the roller member in position thereby. The two bearing portions of the roller member are connected by a shaft portion 11, of any suitable size.

The plate member, 8, of the instrument has one it edges rip-turned, as seen at 12. This rip-turned edge may serve as a straightcdge, tor use with a pencil 13, shown in Figure 3, or other device. The other edge of the plate member may be brought to at shar 'i-edgc, as seen in Figures 2, 3 and 4, at M, and may be used as a tearing edge, to tear a piece of paper 15, shown in Figure 4.

The plate member is graduated adjacent both edges 12 and i4. as seen at 16, Figure 1. These graduations are in correspondence. with the letter space of a typewriter.

In use, the instrument may be moved down the length of a sheet of paper, exposing one line at a time. but, through the opening a and showing what is coming, and the plate member, by its weight, resting on the paper, will maintain the instrument in its position, and the roller member will permit it being moved along the paper and will maintain its parallelism. At the same time the edge scale or graduation, will inclicate any particular point of a line, and its exact position with reference to the paper in the typewriting machine.

Having thus described my invention, and an embodiment of it, in the full, clear and exact terms required by law, and knowing that it comprises novel, useful and valuable improvement in the art to which it pertains, I here state that I do not wish to be limited to the precise construction and arrangement of the several parts, as herein set forth, as the same may be. variously modified by a skilled mechanic without departing from the spirit of the invention.

lVhat I claim and desire to secure by Let ters Patent of the United States, is the following, to wit 1* l. A parallel ruler, comprising in combination, a cylindrically concave plate on its under side having a longitudinal central opening and lateral graduated edges, said edges being both adapted to slide fiat upon a sheet of typewriting paper and forming holding means for said paper, one of said edges beveled forming thereby a cutting device and the other edge up turned, forming guiding ruling means, a roller projecting through said central opening and means for inorably holding said roller in said opening.

2. A parallel ruler, comprising in combination, a plate having a longitudinal central opening and lateral graduated straight edges, said edges being both adapted to slide fiat upon a sheet of typewriting paper, one of said edges being beveled, forming thereby, a paper cutting edge and the other edge being up-turned forming a guiding ruling edge, a standard at each end of said central opening, a roller projecting through said central opening and loosely supported therein by said standards said plate being provided with a peep-hole near each end thereof showing the location of the plate upon said sheet of typewriting paper.

In tectimony that I claim the foregoing I have hereto set my hand this 1st day of February, 1921.

VICTOR A. STROM. 

